Fun Fact: The color of a player's skin could change during the game. This was a result of the strobe animation that indicated which player on the court was being directly controlled at any given time.
When Double Dribble was first released, NES players were psyched to have a basketball game with such high production values. The digitized speech over the title screen was barely decipherable, but it was digitized speech, and there were animated cutscenes when players dunked the ball.
There were sweet spots to shoot from which always seemed to result in getting a basket, and dunks were missed a little too frequently not to notice, but all the fundamentals were there for a solid game of single player or head-to-head basketball that felt like a legitimate simulation.